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Can renewable energy sources power the world? Badge icon
Science, Maths & Technology

Can renewable energy sources power the world?

...types of energy conversion can be really efficient, for example up to 90% in a water turbine; others very low - around 10-20% in a typical internal combustion engine. If you’re trying to assess an energy generator’s productivity in practice, one useful measure is its capacity factor (CF): capacity factor = actual energy output over time / maximum possible output The...
View course Can renewable energy sources power the world?
Level 1: Introductory 24 hrs
Colour fastness
Money & Business

Colour fastness

...type of rubbing, washing, perspiration and sun exposure to give the dyer and the retailer an idea that it will be suitable. These tests are internationally accepted and approved through an organisation called ISO and in the UK this is organised for British Standards Institute BSI through the Society of Dyers and Colourists (SDC). To test the dyed and finished t-shirt for...
View article Colour fastness
Article 5 mins
Why ‘sugar-free’ is not recommended as a substitute for sugary drinks and foods
Health, Sports & Psychology

Why ‘sugar-free’ is not recommended as a substitute for sugary drinks and foods

...and waist circumference among users, and also reported higher incidence of high blood pressure, Type 2 diabetes and heart-related risk. The review concluded that it was too early to state that artificial sweeteners were risk-free. As the long-term effects of children consuming artificial sweeteners are also unknown, it’s considered better for children to drink water....
View article Why ‘sugar-free’ is not recommended as a substitute for sugary drinks and foods
Article 5 mins
Sound Systems: Listening to music together
History & The Arts

Sound Systems: Listening to music together

...through further study not only of music related to sound systems, but of any type of music at all, as demonstrated in all our Open University undergraduate and postgraduate music courses. Find out more about The Open University's Music courses and qualifications. Acknowledgement: With thanks to MK Arena for allowing us to use the stadium during the film production....
View article Sound Systems: Listening to music together
Article 5 mins
The law and social work in Scotland
Health, Sports & Psychology

The law and social work in Scotland

...types of risk inherent in aspects of social work, including personal and physical intimidation and how lifestyle can be negatively affected. Criminal justice social work A fascinating look into the criminal justice system and how it intersects with Social Services in Scotland, highlighting the importance of the service user but also the responsibility that comes with this...
View audio The law and social work in Scotland
Audio 2 hrs 27 mins
What is Planetary Protection?
Science, Maths & Technology

What is Planetary Protection?

...type of mission itself (a flyby, orbiter, lander or sample return), and its scientific objectives. These are used to classify each mission into (currently) one of five categories (Table 1), which then determines how stringent Planetary Protection controls need to be during the spacecraft design, build, launch and operations. These controls might be simply ensuring any...
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Article 5 mins
Assessment in secondary geography
Education & Development

Assessment in secondary geography

...types of assessment? What feelings do you associate with assessment? Which experiences of assessment have been most helpful to you as a learner and in what ways? Part 2 Make lists of what you think assessment should achieve from the perspective of the: learner parent/carer teacher school government, employers and wider society. Part 3 Which do you think are the most...
View course Assessment in secondary geography
Level 3: Advanced 11 hrs
Essay and report writing skills
Education & Development

Essay and report writing skills

...phrased as ‘think about the audience’) What is the most appropriate format: report or essay? Do I have a choice, or is it stipulated in any guidance notes I've been given? What is the question asking? Is the aim to inform, to analyse or to recommend – or perhaps something else? Is there a recommended length? Is there advice about how to distribute the word...
View course Essay and report writing skills
Level 1: Introductory 15 hrs